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. STEPHEN A. EMERY, OF BOSTON, MASSACHUSETTS.

Lam Patent No. 83,946, lated Not-emba- 10, 186s.

ARIITHMETICALIV G-AME.

The Schedule referred to in these Letters Patent and making part f the same.

ABc it known that I, STEPHEN A. EME-BY, of Boston, in the county otSuiiblk, in ythe.Commomvealth of Massachusetts, have invented a new and-useful machine o1; device, entitled An Arithmatelle, designed to combine instruction in arithmetic with amusement, in the form of a parlor-game; and I hereby declare the following to be a iiill, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing, making a partei' this specification.

B represents a level board, '(to be covered or not with billiard-cloth or other cove1ing,) tive feet long, more or less, thirteen inches wide, with a railing, h, oi"suiiieient height to prevent a ball or marble from rolling oit', except at the bowed end into a bag, A.

e c c c are four circles, three inches in diameter, each containing the numerals ,from Il tov1 2, inclusive, in the order and position as shown in the drawing, and in: rked, respectively, add, divide by, multiply by, subtract, in the order indicated by the thawing. 4, d :l d d are pointers or indices, made to revolve horizontally on vertical pivots, c e c e, and elevated sufficiently from the surface of the board to be easily moved by a rolling marble or ball.

f is a cue, four feet long, more or less, for projecting balls or marbles g g g, three in number. l

j is the point from which the balls or marbles are to bc projected toward the circles. i

k is a slight depression in the railing h, to admit of a more convenient use of the cue.

This device is to beused or game to' be played byA any number of persons in the following manner:

Each player connnen'ces the game with twelve points as his capital, the vindices being' adjusted pointing at right angles across the board, as shown in the drawing. Placing a ball or marble at the point j, the player hits it with the end of the cue, so as to drive it toward the circles.

When an index shall have been made to revolve by this means, the starting capital, 12, is to be affected bythe figure nearest which the pointed end ofthe index stops, according to the word or words'attached to the circle containing it. For instance, if the index in the circle marked subtract, stop at Aiguref), this, sub-l tracted ii'om the capital, 12, gives 3 the result.

Without readjusting this index, but leaving it as it last stopped, a second ball or marble is now projected toward the circles, the iigure caused to be pointed by this now aiiecting 3, the result oi' the rst play.

Supposing the second ball to cause the index in the circle marked multiply by to stop at 10, the result would be 30. This index also must be left as it stopped, and then the third ball may be played.

supposing the third ball to cause the index in the vcircle marked divide by to stop at 6, dividing the last result by this, the result would be 5; or if, instcad of this, another index should show multiply by 2, the result would be 70; or if, instead of this, another should show add l0, the result would be 40; or, again, if -instead of this the index should indicate subtract 1, the result would be 29.

The same index may be moved by consecutive balls, in which case the figure at which the index last points is to be used to ati'eet the count.

If two of the indices are moved by the same ball, the one nearer the left hand is to be reckoned first.

'.lhe indices being now readjusted as at the beginning like manner as the first, and after him, in turn, all who participate in the game.

Then each player shall have played the three balls` ten times, the one who has the largest number as tlul result is to be regarded as having won the game.

l/Vith young players, fractions and minus quantities had better be omitted in the calculations. Whenoldcr persons play, a fraction less than one-half should be rejected; when more, it should be'connted one. .lo render the game most perfect, every iiaction should be reckoned with mathematical exactness.

table, as used in other games.

What I claim as my invention, is The arrangement, and construction, and inode oi' operation, as above described, by which instrl'lction in the science of arithmetic is secured, in combination with an entertaining amusement.

. STEPHEN A. EM ilRY. Witnesses:

GEO. F. Enum', F. W. Erreur.

of the game, the next player now plays three balls in I do not claim as new the use of the ene, or balls', or' 

